Diff: mbed-dev/targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_rtc_ex.c

Revision:

18:6a4db94011d3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev/targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_rtc_ex.c	Sun May 14 23:18:57 2017 +0000
@@ -0,0 +1,1415 @@
+/**
+  ******************************************************************************
+  * @file    stm32f2xx_hal_rtc_ex.c
+  * @author  MCD Application Team
+  * @version V1.1.3
+  * @date    29-June-2016
+  * @brief   RTC HAL module driver.
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the Real Time Clock (RTC) Extension peripheral:
+  *           + RTC Time Stamp functions
+  *           + RTC Tamper functions 
+  *           + RTC Wake-up functions
+  *           + Extension Control functions
+  *           + Extension RTC features functions    
+  *         
+  @verbatim
+  ==============================================================================
+                  ##### How to use this driver #####
+  ==============================================================================
+  [..] 
+    (+) Enable the RTC domain access.
+    (+) Configure the RTC Prescaler (Asynchronous and Synchronous) and RTC hour 
+        format using the HAL_RTC_Init() function.
+  
+  *** RTC Wake-up configuration ***
+  ================================
+  [..] 
+    (+) To configure the RTC Wake-up Clock source and Counter use the HAL_RTCEx_SetWakeUpTimer()
+        function. You can also configure the RTC Wake-up timer in interrupt mode 
+        using the HAL_RTCEx_SetWakeUpTimer_IT() function.
+    (+) To read the RTC Wake-up Counter register, use the HAL_RTCEx_GetWakeUpTimer() 
+        function.
+  
+  *** TimeStamp configuration ***
+  ===============================
+  [..]
+    (+) Configure the RTC_AFx trigger and enable the RTC TimeStamp using the 
+        HAL_RTCEx_SetTimeStamp() function. You can also configure the RTC TimeStamp with 
+        interrupt mode using the HAL_RTCEx_SetTimeStamp_IT() function.
+    (+) To read the RTC TimeStamp Time and Date register, use the HAL_RTCEx_GetTimeStamp()
+        function.
+    (+) The TIMESTAMP alternate function can be mapped either to RTC_AF1 (PC13)
+        or RTC_AF2 (PI8) depending on the value of TSINSEL bit in 
+        RTC_TAFCR register. The corresponding pin is also selected by HAL_RTCEx_SetTimeStamp()
+        or HAL_RTCEx_SetTimeStamp_IT() function.
+  
+  *** Tamper configuration ***
+  ============================
+  [..]
+    (+) Enable the RTC Tamper and configure the trigger using the HAL_RTCEx_SetTamper() function.
+        You can configure RTC Tamper in interrupt mode using HAL_RTCEx_SetTamper_IT() function.
+    (+) The TAMPER1 alternate function can be mapped either to RTC_AF1 (PC13)
+        or RTC_AF2 (PI8) depending on the value of TAMP1INSEL bit in 
+        RTC_TAFCR register. The corresponding pin is also selected by HAL_RTCEx_SetTamper()
+        or HAL_RTCEx_SetTamper_IT() function.
+  
+  *** Backup Data Registers configuration ***
+  ===========================================
+  [..]
+    (+) To write to the RTC Backup Data registers, use the HAL_RTCEx_BKUPWrite()
+        function.  
+    (+) To read the RTC Backup Data registers, use the HAL_RTCEx_BKUPRead()
+        function.
+     
+   @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f2xx_hal.h"
+
+/** @addtogroup STM32F2xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup RTCEx RTCEx
+  * @brief RTC HAL module driver
+  * @{
+  */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup RTCEx_Exported_Functions RTC Exported Functions
+  * @{
+  */  
+
+/** @defgroup RTCEx_Exported_Functions_Group1 RTC TimeStamp and Tamper functions
+  *  @brief   RTC TimeStamp and Tamper functions
+  *
+@verbatim   
+ ===============================================================================
+                 ##### RTC TimeStamp and Tamper functions #####
+ ===============================================================================  
+ 
+ [..] This section provides functions allowing to configure TimeStamp feature
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Sets TimeStamp.
+  * @note   This API must be called before enabling the TimeStamp feature. 
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  TimeStampEdge: Specifies the pin edge on which the TimeStamp is 
+  *         activated.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPEDGE_RISING: the Time stamp event occurs on the  
+  *                                        rising edge of the related pin.
+  *             @arg RTC_TIMESTAMPEDGE_FALLING: the Time stamp event occurs on the 
+  *                                         falling edge of the related pin.
+  * @param  RTC_TimeStampPin: specifies the RTC TimeStamp Pin.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPPIN_DEFAULT: PC13 is selected as RTC TimeStamp Pin.
+  *             @arg RTC_TIMESTAMPPIN_POS1: PI8 is selected as RTC TimeStamp Pin.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
+{
+  uint32_t tmpreg = 0U;
+  
+  /* Check the parameters */
+  assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
+  assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
+  
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Get the RTC_CR register and clear the bits to be configured */
+  tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
+    
+  tmpreg|= TimeStampEdge;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
+  hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin); 
+  
+  /* Configure the Time Stamp TSEDGE and Enable bits */
+  hrtc->Instance->CR = (uint32_t)tmpreg;
+  
+  __HAL_RTC_TIMESTAMP_ENABLE(hrtc);
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);    
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets TimeStamp with Interrupt. 
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @note   This API must be called before enabling the TimeStamp feature.
+  * @param  TimeStampEdge: Specifies the pin edge on which the TimeStamp is 
+  *         activated.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPEDGE_RISING: the Time stamp event occurs on the  
+  *                                        rising edge of the related pin.
+  *             @arg RTC_TIMESTAMPEDGE_FALLING: the Time stamp event occurs on the 
+  *                                         falling edge of the related pin.
+  * @param  RTC_TimeStampPin: Specifies the RTC TimeStamp Pin.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPPIN_DEFAULT: PC13 is selected as RTC TimeStamp Pin.
+  *             @arg RTC_TIMESTAMPPIN_POS1: PI8 is selected as RTC TimeStamp Pin.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp_IT(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
+{
+  uint32_t tmpreg = 0U;
+  
+  /* Check the parameters */
+  assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
+  assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
+  
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Get the RTC_CR register and clear the bits to be configured */
+  tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
+  
+  tmpreg |= TimeStampEdge;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  /* Configure the Time Stamp TSEDGE and Enable bits */
+  hrtc->Instance->CR = (uint32_t)tmpreg;
+  
+  hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
+  hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin); 
+  
+  /* Clear RTC Timestamp flag */
+  __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
+
+  __HAL_RTC_TIMESTAMP_ENABLE(hrtc);
+  
+  /* Enable IT timestamp */ 
+  __HAL_RTC_TIMESTAMP_ENABLE_IT(hrtc,RTC_IT_TS);
+  
+  /* RTC timestamp Interrupt Configuration: EXTI configuration */
+  __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
+  
+  EXTI->RTSR |= RTC_EXTI_LINE_TAMPER_TIMESTAMP_EVENT;
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);  
+  
+  hrtc->State = HAL_RTC_STATE_READY;  
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates TimeStamp. 
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateTimeStamp(RTC_HandleTypeDef *hrtc)
+{
+  uint32_t tmpreg = 0U;
+  
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  /* In case of interrupt mode is used, the interrupt source must disabled */ 
+  __HAL_RTC_TIMESTAMP_DISABLE_IT(hrtc, RTC_IT_TS);
+  
+  /* Get the RTC_CR register and clear the bits to be configured */
+  tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
+  
+  /* Configure the Time Stamp TSEDGE and Enable bits */
+  hrtc->Instance->CR = (uint32_t)tmpreg;
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+ 
+  hrtc->State = HAL_RTC_STATE_READY;  
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Gets the RTC TimeStamp value.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  sTimeStamp: Pointer to Time structure
+  * @param  sTimeStampDate: Pointer to Date structure  
+  * @param  Format: specifies the format of the entered parameters.
+  *          This parameter can be one of the following values:
+  *             RTC_FORMAT_BIN: Binary data format 
+  *             RTC_FORMAT_BCD: BCD data format
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_GetTimeStamp(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef* sTimeStamp, RTC_DateTypeDef* sTimeStampDate, uint32_t Format)
+{
+  uint32_t tmptime = 0U, tmpdate = 0U;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_FORMAT(Format));
+
+  /* Get the TimeStamp time and date registers values */
+  tmptime = (uint32_t)(hrtc->Instance->TSTR & RTC_TR_RESERVED_MASK);
+  tmpdate = (uint32_t)(hrtc->Instance->TSDR & RTC_DR_RESERVED_MASK);
+
+  /* Fill the Time structure fields with the read parameters */
+  sTimeStamp->Hours = (uint8_t)((tmptime & (RTC_TR_HT | RTC_TR_HU)) >> 16U);
+  sTimeStamp->Minutes = (uint8_t)((tmptime & (RTC_TR_MNT | RTC_TR_MNU)) >> 8U);
+  sTimeStamp->Seconds = (uint8_t)(tmptime & (RTC_TR_ST | RTC_TR_SU));
+  sTimeStamp->TimeFormat = (uint8_t)((tmptime & (RTC_TR_PM)) >> 16U);  
+  
+  /* Fill the Date structure fields with the read parameters */
+  sTimeStampDate->Year = 0U;
+  sTimeStampDate->Month = (uint8_t)((tmpdate & (RTC_DR_MT | RTC_DR_MU)) >> 8U);
+  sTimeStampDate->Date = (uint8_t)(tmpdate & (RTC_DR_DT | RTC_DR_DU));
+  sTimeStampDate->WeekDay = (uint8_t)((tmpdate & (RTC_DR_WDU)) >> 13U);
+
+  /* Check the input parameters format */
+  if(Format == RTC_FORMAT_BIN)
+  {
+    /* Convert the TimeStamp structure parameters to Binary format */
+    sTimeStamp->Hours = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Hours);
+    sTimeStamp->Minutes = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Minutes);
+    sTimeStamp->Seconds = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Seconds);
+    
+    /* Convert the DateTimeStamp structure parameters to Binary format */
+    sTimeStampDate->Month = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->Month);
+    sTimeStampDate->Date = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->Date);
+    sTimeStampDate->WeekDay = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->WeekDay);
+  }
+  
+  /* Clear the TIMESTAMP Flag */
+  __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
+    
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets Tamper
+  * @note   By calling this API we disable the tamper interrupt for all tampers. 
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  sTamper: Pointer to Tamper Structure.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTamper(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef* sTamper)
+{
+  uint32_t tmpreg = 0U;
+  
+  /* Check the parameters */
+  assert_param(IS_RTC_TAMPER(sTamper->Tamper)); 
+  assert_param(IS_RTC_TAMPER_PIN(sTamper->PinSelection));
+  assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
+
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+    
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->PinSelection | (uint32_t)(sTamper->Trigger));
+
+  hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)RTC_TAFCR_TAMP1E | (uint32_t)RTC_TAFCR_TAMP1TRG | (uint32_t)RTC_TAFCR_TAMPINSEL);
+
+  hrtc->Instance->TAFCR |= tmpreg;
+  
+  hrtc->State = HAL_RTC_STATE_READY; 
+
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+    
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets Tamper with interrupt.
+  * @note   By calling this API we force the tamper interrupt for all tampers.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  sTamper: Pointer to RTC Tamper.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTamper_IT(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef* sTamper)
+{
+  uint32_t tmpreg = 0U;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_TAMPER(sTamper->Tamper)); 
+  assert_param(IS_RTC_TAMPER_PIN(sTamper->PinSelection));
+  assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
+
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->PinSelection | (uint32_t)sTamper->Trigger);
+
+  hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)RTC_TAFCR_TAMP1E | (uint32_t)RTC_TAFCR_TAMP1TRG | (uint32_t)RTC_TAFCR_TAMPINSEL | (uint32_t)RTC_TAFCR_TAMPIE);
+
+  hrtc->Instance->TAFCR |= tmpreg;
+
+  /* Configure the Tamper Interrupt in the RTC_TAFCR */
+  hrtc->Instance->TAFCR |= (uint32_t)RTC_TAFCR_TAMPIE;
+
+  /* Clear RTC Tamper 1 flag */
+  __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP1F);
+
+  /* RTC Tamper Interrupt Configuration: EXTI configuration */
+  __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
+
+  EXTI->RTSR |= RTC_EXTI_LINE_TAMPER_TIMESTAMP_EVENT;
+
+  hrtc->State = HAL_RTC_STATE_READY;   
+
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates Tamper.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Tamper: Selected tamper pin.
+  *          This parameter can be RTC_Tamper_1.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateTamper(RTC_HandleTypeDef *hrtc, uint32_t Tamper)
+{
+  assert_param(IS_RTC_TAMPER(Tamper)); 
+  
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+      
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the selected Tamper pin */
+  hrtc->Instance->TAFCR &= (uint32_t)~Tamper;  
+  
+  hrtc->State = HAL_RTC_STATE_READY;   
+  
+  /* Process Unlocked */  
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK; 
+}
+
+/**
+  * @brief  This function handles TimeStamp interrupt request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+void HAL_RTCEx_TamperTimeStampIRQHandler(RTC_HandleTypeDef *hrtc)
+{  
+  if(__HAL_RTC_TIMESTAMP_GET_IT(hrtc, RTC_IT_TS))
+  {
+    /* Get the status of the Interrupt */
+    if((uint32_t)(hrtc->Instance->CR & RTC_IT_TS) != (uint32_t)RESET)
+    {
+      /* TIMESTAMP callback */ 
+      HAL_RTCEx_TimeStampEventCallback(hrtc);
+  
+      /* Clear the TIMESTAMP interrupt pending bit */
+      __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc,RTC_FLAG_TSF);
+    }
+  }
+  
+  /* Get the status of the Interrupt */
+  if(__HAL_RTC_TAMPER_GET_IT(hrtc,RTC_IT_TAMP1))
+  {
+    /* Get the TAMPER Interrupt enable bit and pending bit */
+    if(((hrtc->Instance->TAFCR & (RTC_TAFCR_TAMPIE))) != (uint32_t)RESET) 
+    {
+      /* Tamper callback */ 
+      HAL_RTCEx_Tamper1EventCallback(hrtc);
+  
+      /* Clear the Tamper interrupt pending bit */
+      __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc,RTC_FLAG_TAMP1F);
+    }
+  }
+  
+  /* Clear the EXTI's Flag for RTC TimeStamp and Tamper */
+  __HAL_RTC_TAMPER_TIMESTAMP_EXTI_CLEAR_FLAG();
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+}
+
+/**
+  * @brief  TimeStamp callback. 
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_TimeStampEventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hrtc);
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_TimeStampEventCallback could be implemented in the user file
+  */
+}
+
+/**
+  * @brief  Tamper 1 callback. 
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_Tamper1EventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hrtc);
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_Tamper1EventCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  This function handles TimeStamp polling request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForTimeStampEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{ 
+  uint32_t tickstart = 0U; 
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  while(__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSF) == RESET)
+  {
+    if(__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSOVF) != RESET)
+    {
+      /* Clear the TIMESTAMP Overrun Flag */
+      __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSOVF);
+      
+      /* Change TIMESTAMP state */
+      hrtc->State = HAL_RTC_STATE_ERROR; 
+      
+      return HAL_ERROR; 
+    }
+    
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  return HAL_OK; 
+}
+  
+/**
+  * @brief  This function handles Tamper1 Polling.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForTamper1Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{  
+  uint32_t tickstart = 0U; 
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+  
+  /* Get the status of the Interrupt */
+  while(__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP1F)== RESET)
+  {
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+  
+  /* Clear the Tamper Flag */
+  __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc,RTC_FLAG_TAMP1F);
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+  
+  return HAL_OK; 
+}
+
+/**
+  * @}
+  */
+  
+/** @defgroup RTCEx_Exported_Functions_Group2 RTC Wake-up functions
+  *  @brief   RTC Wake-up functions
+  *
+@verbatim   
+ ===============================================================================
+                        ##### RTC Wake-up functions #####
+ ===============================================================================  
+ 
+ [..] This section provides functions allowing to configure Wake-up feature
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Sets wake up timer. 
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  WakeUpCounter: Wake up counter
+  * @param  WakeUpClock: Wake up clock  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
+{
+  uint32_t tickstart = 0U;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_WAKEUP_CLOCK(WakeUpClock));
+  assert_param(IS_RTC_WAKEUP_COUNTER(WakeUpCounter));
+ 
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+    
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /*Check RTC WUTWF flag is reset only when wake up timer enabled*/
+  if((hrtc->Instance->CR & RTC_CR_WUTE) != RESET)
+  {
+    tickstart = HAL_GetTick();
+
+    /* Wait till RTC WUTWF flag is reset and if Time out is reached exit */
+    while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == SET)
+    {
+      if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+      {
+        /* Enable the write protection for RTC registers */
+        __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+        
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+        /* Process Unlocked */ 
+        __HAL_UNLOCK(hrtc);
+
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Wait till RTC WUTWF flag is set and if Time out is reached exit */
+  while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET)
+  {
+    if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+    {
+      /* Enable the write protection for RTC registers */
+      __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+      
+      hrtc->State = HAL_RTC_STATE_TIMEOUT; 
+      
+      /* Process Unlocked */ 
+      __HAL_UNLOCK(hrtc);
+      
+      return HAL_TIMEOUT;
+    }  
+  }
+  
+  /* Clear the Wake-up Timer clock source bits in CR register */
+  hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
+  
+  /* Configure the clock source */
+  hrtc->Instance->CR |= (uint32_t)WakeUpClock;
+  
+  /* Configure the Wake-up Timer counter */
+  hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
+  
+   /* Enable the Wake-up Timer */
+  __HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);   
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); 
+  
+  hrtc->State = HAL_RTC_STATE_READY;   
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets wake up timer with interrupt
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  WakeUpCounter: Wake up counter
+  * @param  WakeUpClock: Wake up clock  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer_IT(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
+{
+  __IO uint32_t count;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_WAKEUP_CLOCK(WakeUpClock));
+  assert_param(IS_RTC_WAKEUP_COUNTER(WakeUpCounter));
+
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /*Check RTC WUTWF flag is reset only when wake up timer enabled*/
+  if((hrtc->Instance->CR & RTC_CR_WUTE) != RESET)
+  {
+    /* Wait till RTC WUTWF flag is reset and if Time out is reached exit */
+    count = RTC_TIMEOUT_VALUE  * (SystemCoreClock / 32U / 1000U);
+    do
+    {
+      if (count-- == 0U)
+      {
+        /* Enable the write protection for RTC registers */
+        __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+        /* Process Unlocked */
+        __HAL_UNLOCK(hrtc);
+
+        return HAL_TIMEOUT;
+      }
+    }
+    while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == SET);
+  }
+
+  __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
+
+  /* Wait till RTC WUTWF flag is set and if Time out is reached exit */
+  count = RTC_TIMEOUT_VALUE  * (SystemCoreClock / 32U / 1000U);
+  do
+  {
+    if (count-- == 0U)
+    {
+      /* Enable the write protection for RTC registers */
+      __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+      hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hrtc);
+
+      return HAL_TIMEOUT;
+    }
+  }
+  while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET);
+
+  /* Configure the Wake-up Timer counter */
+  hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
+
+  /* Clear the Wake-up Timer clock source bits in CR register */
+  hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
+
+  /* Configure the clock source */
+  hrtc->Instance->CR |= (uint32_t)WakeUpClock;
+
+  /* RTC WakeUpTimer Interrupt Configuration: EXTI configuration */
+  __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT();
+
+  EXTI->RTSR |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT;
+
+  /* Clear RTC Wake Up timer Flag */
+  __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
+
+  /* Configure the Interrupt in the RTC_CR register */
+  __HAL_RTC_WAKEUPTIMER_ENABLE_IT(hrtc,RTC_IT_WUT);
+
+  /* Enable the Wake-up Timer */
+  __HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); 
+
+  hrtc->State = HAL_RTC_STATE_READY;   
+
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates wake up timer counter.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC. 
+  * @retval HAL status
+  */
+uint32_t HAL_RTCEx_DeactivateWakeUpTimer(RTC_HandleTypeDef *hrtc)
+{
+  uint32_t tickstart = 0U;
+  
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  /* Disable the Wake-up Timer */
+  __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
+  
+  /* In case of interrupt mode is used, the interrupt source must disabled */ 
+  __HAL_RTC_WAKEUPTIMER_DISABLE_IT(hrtc,RTC_IT_WUT);
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Wait till RTC WUTWF flag is set and if Time out is reached exit */
+  while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET)
+  {
+    if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+    {
+      /* Enable the write protection for RTC registers */
+      __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+      
+      hrtc->State = HAL_RTC_STATE_TIMEOUT; 
+      
+      /* Process Unlocked */ 
+      __HAL_UNLOCK(hrtc);
+      
+      return HAL_TIMEOUT;
+    }   
+  }
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_READY;   
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Gets wake up timer counter.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC. 
+  * @retval Counter value
+  */
+uint32_t HAL_RTCEx_GetWakeUpTimer(RTC_HandleTypeDef *hrtc)
+{
+  /* Get the counter value */
+  return ((uint32_t)(hrtc->Instance->WUTR & RTC_WUTR_WUT)); 
+}
+
+/**
+  * @brief  This function handles Wake Up Timer interrupt request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+void HAL_RTCEx_WakeUpTimerIRQHandler(RTC_HandleTypeDef *hrtc)
+{  
+  if(__HAL_RTC_WAKEUPTIMER_GET_IT(hrtc, RTC_IT_WUT))
+  {
+    /* Get the status of the Interrupt */
+    if((uint32_t)(hrtc->Instance->CR & RTC_IT_WUT) != (uint32_t)RESET)
+    {
+      /* WAKEUPTIMER callback */ 
+      HAL_RTCEx_WakeUpTimerEventCallback(hrtc);
+      
+      /* Clear the WAKEUPTIMER interrupt pending bit */
+      __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
+    }
+  }
+  
+  /* Clear the EXTI's line Flag for RTC WakeUpTimer */
+  __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG();
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+}
+
+/**
+  * @brief  Wake Up Timer callback.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hrtc);
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_WakeUpTimerEventCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  This function handles Wake Up Timer Polling.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForWakeUpTimerEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{  
+  uint32_t tickstart = 0U; 
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTF) == RESET)
+  {
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+      
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+  
+  /* Clear the WAKEUPTIMER Flag */
+  __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+  
+  return HAL_OK; 
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup RTCEx_Exported_Functions_Group3 Extension Peripheral Control functions 
+  *  @brief   Extension Peripheral Control functions 
+  *
+@verbatim   
+ ===============================================================================
+              ##### Extension Peripheral Control functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides functions allowing to
+      (+) Write a data in a specified RTC Backup data register
+      (+) Read a data in a specified RTC Backup data register
+      (+) Set the Coarse calibration parameters.
+      (+) Deactivate the Coarse calibration parameters
+      (+) Configure the Synchronization Shift Control Settings.
+      (+) Configure the Calibration Pinout (RTC_CALIB).
+      (+) Deactivate the Calibration Pinout (RTC_CALIB).
+      (+) Enable the RTC reference clock detection.
+      (+) Disable the RTC reference clock detection.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Writes a data in a specified RTC Backup data register.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC. 
+  * @param  BackupRegister: RTC Backup data Register number.
+  *          This parameter can be: RTC_BKP_DRx where x can be from 0 to 19 to 
+  *                                 specify the register.
+  * @param  Data: Data to be written in the specified RTC Backup data register.
+  * @retval None
+  */
+void HAL_RTCEx_BKUPWrite(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister, uint32_t Data)
+{
+  uint32_t tmp = 0U;
+  
+  /* Check the parameters */
+  assert_param(IS_RTC_BKP(BackupRegister));
+  
+  tmp = (uint32_t)&(hrtc->Instance->BKP0R);
+  tmp += (BackupRegister * 4U);
+  
+  /* Write the specified register */
+  *(__IO uint32_t *)tmp = (uint32_t)Data;
+}
+
+/**
+  * @brief  Reads data from the specified RTC Backup data Register.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC. 
+  * @param  BackupRegister: RTC Backup data Register number.
+  *          This parameter can be: RTC_BKP_DRx where x can be from 0 to 19 to 
+  *                                 specify the register.
+  * @retval Read value
+  */
+uint32_t HAL_RTCEx_BKUPRead(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister)
+{
+  uint32_t tmp = 0U;
+  
+  /* Check the parameters */
+  assert_param(IS_RTC_BKP(BackupRegister));
+
+  tmp = (uint32_t)&(hrtc->Instance->BKP0R);
+  tmp += (BackupRegister * 4U);
+  
+  /* Read the specified register */
+  return (*(__IO uint32_t *)tmp);
+}
+      
+/**
+  * @brief  Sets the Coarse calibration parameters.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.  
+  * @param  CalibSign: Specifies the sign of the coarse calibration value.
+  *          This parameter can be  one of the following values :
+  *             @arg RTC_CALIBSIGN_POSITIVE: The value sign is positive 
+  *             @arg RTC_CALIBSIGN_NEGATIVE: The value sign is negative
+  * @param  Value: value of coarse calibration expressed in ppm (coded on 5 bits).
+  *    
+  * @note   This Calibration value should be between 0 and 63 when using negative
+  *         sign with a 2-ppm step.
+  *           
+  * @note   This Calibration value should be between 0 and 126 when using positive
+  *         sign with a 4-ppm step.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetCoarseCalib(RTC_HandleTypeDef* hrtc, uint32_t CalibSign, uint32_t Value)
+{
+  /* Check the parameters */
+  assert_param(IS_RTC_CALIB_SIGN(CalibSign));
+  assert_param(IS_RTC_CALIB_VALUE(Value)); 
+  
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); 
+    
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+    
+    /* Process Unlocked */ 
+    __HAL_UNLOCK(hrtc);
+    
+    return HAL_ERROR;
+  } 
+  else
+  { 
+    /* Enable the Coarse Calibration */
+    __HAL_RTC_COARSE_CALIB_ENABLE(hrtc);
+    
+    /* Set the coarse calibration value */
+    hrtc->Instance->CALIBR = (uint32_t)(CalibSign|Value);
+    
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT; 
+  } 
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+  
+  /* Change state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates the Coarse calibration parameters.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateCoarseCalib(RTC_HandleTypeDef* hrtc)
+{ 
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); 
+    
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+    
+    /* Process Unlocked */ 
+    __HAL_UNLOCK(hrtc);
+    
+    return HAL_ERROR;
+  } 
+  else
+  { 
+    /* Enable the Coarse Calibration */
+    __HAL_RTC_COARSE_CALIB_DISABLE(hrtc);
+    
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT; 
+  } 
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+  
+  /* Change state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Configure the Calibration Pinout (RTC_CALIB).
+  * @param  hrtc : RTC handle    
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetCalibrationOutPut(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  __HAL_RTC_CALIBRATION_OUTPUT_ENABLE(hrtc);
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates the Calibration Pinout (RTC_CALIB).
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.    
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateCalibrationOutPut(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  __HAL_RTC_CALIBRATION_OUTPUT_DISABLE(hrtc);
+    
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Enables the RTC reference clock detection.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.    
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetRefClock(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); 
+    
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+    
+    /* Process Unlocked */ 
+    __HAL_UNLOCK(hrtc);
+    
+    return HAL_ERROR;
+  } 
+  else
+  {
+    __HAL_RTC_CLOCKREF_DETECTION_ENABLE(hrtc);
+
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT; 
+  }
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+  
+   /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Disable the RTC reference clock detection.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.    
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateRefClock(RTC_HandleTypeDef* hrtc)
+{ 
+  /* Process Locked */ 
+  __HAL_LOCK(hrtc);
+  
+  hrtc->State = HAL_RTC_STATE_BUSY;
+  
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+  
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); 
+    
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+    
+    /* Process Unlocked */ 
+    __HAL_UNLOCK(hrtc);
+    
+    return HAL_ERROR;
+  } 
+  else
+  {
+    __HAL_RTC_CLOCKREF_DETECTION_DISABLE(hrtc);
+    
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT; 
+  }
+  
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  /* Process Unlocked */ 
+  __HAL_UNLOCK(hrtc);
+  
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup RTCEx_Exported_Functions_Group4 Extended features functions 
+  *  @brief    Extended features functions  
+  *
+@verbatim   
+ ===============================================================================
+                 ##### Extended features functions #####
+ ===============================================================================  
+    [..]  This section provides functions allowing to:
+      (+) RTC Alarm B callback
+      (+) RTC Poll for Alarm B request
+               
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Alarm B callback.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_AlarmBEventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hrtc);
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_AlarmBEventCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  This function handles AlarmB Polling request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForAlarmBEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{  
+  uint32_t tickstart = 0U; 
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBF) == RESET)
+  {
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+  
+  /* Clear the Alarm Flag */
+  __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRBF);
+  
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY; 
+  
+  return HAL_OK; 
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_RTC_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/